Mayor Bill de Blasio and his wife, Chirlane McCray, donated just $350 to charity last year, according to their publicly released 2017 tax return.
The mayor earned $223,000 in adjusted income and lives rent-free in Gracie Mansion.
De Blasio paid his tax preparer $500, more than he gave in charitable contributions.
He owns two properties in Brooklyn, which he rents out. He recorded a loss of $12,000 for tax purposes on those properties, which brought in more than $100,000 last year in rent.